Calculate TCEC

If you have a standard Logan Labs soil test report, you do not need to use this calculator – just enter the Total Exchange Capacity value on your report into OrganiCalc. If your soil is “fizzy” and you have an AA8.2 test report too, enter the AA8.2 Ca value here, along with your standard M3 test Mg, K and Na values and pH. Use the TCEC calculated here in OrganiCalc.